Patent US2217515A successfully refreshed from Google Patents.
US2217515A
Expired / Lapsed
US
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Conversion of ricinoleates into other organic compounds
Assignee: Wyeth Holdings LLC
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Filing: 1939-02-08
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Granted: 1940-10-08
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Expires: 1959-02-08
Abstract
No abstract record available.
Inventors
- 👤 Houpt Alfred Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:50
CPC Classifications
C; C11; C11C; C11C3/00; C07; C07C; C07C29/00; C07C31/00; C07C31/02; C07C31/125; C07C45/00; C07C45/27; C07C45/29; C07C51/00; C07C51/16; C07C51/295; C07C55/00; C07C55/02; C07C55/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |